Kenya international Michael Olunga has described their 3-2 defeat to Kashiwa Antlers on Saturday as a "difficult game".
It was a day of mixed fortunes for Olunga as he ran clear in the J1 League Golden Boot race but on a day Reysol lost a vital league match at home.
The former Gor Mahia striker struck the first goal of the encounter at Sankyo Frontier Kashiwa Stadium in the 57th minute with an assist from Masatoshi Mihara.
Editors' Picks
Kento Misao equalised for the visitors in the 72nd minute before Olunga’s second effort allowed Kashiwa Reysol to regain the lead in the 84th minute.